Open-hearth regenerative furnace



4 [771 211 for: Je an Se'ne'c/zal.

Afforney.

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Y 1,443,805. 1. SENECHAL. v

1 OPEN HEARTH REYGENERATIVE FURNACE.

FILED JULY 22?.1919,

Patented Jan. 30, 1923.

JEAN snnnormr, or GENOA, ITALY.

OPEN-HEARTH REGENERATIVE FURNACE.

Application filed July 28, 1919.

Serial No. 313,900.

(GRANTED UNDER THE PROVISIONS OF THE ACT OF MARCH 3, 1921, 4:1 STAT. L., 1313.)

1 '0 all whom it may concern Be it known that I, JEAN SnNiioHAL, a citizen of the French Republic, residing at 16 Via Milano, Genoa, in the Kingdom of Italy, have invented certain new and useful Improvements in Open-Hearth Regenerative Furnaces (for which I have filed an application in Italy dated June 27, 1918), of which the followin is a specification.

This invention re ates to improvements in the constructional arrangements of furnace ends of open hearth furnaces, for example, of the Martin Niemkoif type, and its object is to provide simple means for facilitating the repair of the head of the burners without it being necessary to stop the working of the furnace, which operation cannot be carried out with the systems now usually employed. As a matter of fact with the present systems the arrangement of the air and gas passages produces a very rapid destruction of the partitions dividing such passages.

For a better understanding of the invention, reference should be had to the accompanying drawing forming part of the present application and which shows the head of the burners and the arrangement of the air and gas passages characterizing the invention.

In the drawing showing a preferred form of the invention,

Figure 1 is a longitudinal section of a Martins furnace on the line 11 of Figure 2. a

Figure 2 is a transversal section taken on the line 22 of Figure 1.

Figure 3 is a horizontal section.

Referring to the drawing in particular, A indicates the passage for the gas, B the passage for the air, C the hearth, D the roof of the furnace and E the partitions separating the air from the gas at their arrival into the furnace.

The roof D of the furnace is joined to the flue roof F in such a way as to completely eliminate vertical walls or corners which are, in such furnaces, the parts more subjected to wear out or burn.

From the arrangement of the passages A and B, it results that the mixing of the air with the gas takes place in the furnace hearth, and since the roof of the gas flue does not reach the hearth itself, said .roof is protected from the intense heat of the flame.

Obviously the result will be that only the two short portions of the partitions E will wear and burn out very quickly, but on account of their location, it will be easy to repair them without loss of time and without interrupting the working of the furnace.

What I claim and desire to secure by Letters Patent of the United States is 1. In an open hearth regenerative furnace a furnace end comprising two vertical partitions spaced apart, air passages leading to the outer sides of such partitions, a gas passage leading to the space between the parti-' tions, and a portion of the furnace roof extended over the said passages and joining the roof of the gas passage beyond the furnace.

2-. In an open hearth regenerative fur-v nace a furnaceend comprising two vertical partitions spaced apart, vertical air assages leading to the outer sides of such partitions and opening into the furnace hearth, a central inclined gas passage leading to the space between the partitions and opening into the furnace hearth, and a portion of the furnace roof extended over the said air passages "to the inclined roof of the gas passage and joined thereto beyond the furnace.

3. An open hearth regenerative furnace having air passages located outwardly of an end wall of the furnace proper, and leading into the furnace in an approximately longitudinal direction, the roof of the furnace proper being substantially horizontal and being extended to overlie said air passages, a gas passage located outwardly of said air passages and leading to the furnace proper, an inclined roof being provided for said gas passage, said inclined roof being jointed to theroof pro-per at apoint outwardly of said air passages.

4. An open hearth regenerative furnace wherein the roof of the furnace proper is extended beyond an end Wall thereof, an air mix the gas and air at a point inwardly of passage located outwardly of said end Well, said joint. 10 an inclined roof being provided for said air In testimony whereof I affix my signature passage, said inclined roof being jointed to in presence of two Witnesses.

the roof proper at a point outwardly of said JEAN SENECHAL end Wall of the furnace proper. Witnesses:

5. The combination set forth 111 claim 4, CHAS. P. PRESSLY,

together with agas passage positioned to EMILE KLo r. 

